Has anyone changed these themselves? I've just ordered some powerflex ones cos mine are sh***ed. They have started knocking really badly. Just wondering how difficult they are to do.

i take it you mean the beam the diff is mounted to if it is then it's not difficult but a long involved job haven't done one for a while but you have to remove the exhaust the prop and unbolt the diff and support it somehow then remove the beam hacksaw the bushes out coz the edges arn't thick enough to press them out then press the new ones back in noting if there is a certain way round they go (oe ones have to go a certain way) and then reassemble not difficult but a long job hope this helps.